Hitachi EX20UR-2 Manual page 220

10. Remove bolts (2). Remove track frame under cover
(1).
EX3OUR-2: 17 mm
EX4OUR-2: 19 mm
8. Loosen mounting bolts (1) (4 used) from the hy-
draulic oil tank. Remove the hydraulic oil tank using
a crane.
: 17 mm
9. Disconnect all hoses from the upper side of center
joint (1). Remove the bolts (2 used) on the lock
plate to remove it.
: EX3OUR-2: 22 mm
EX4OUR-2: 22 mm, 27 mm
gyms&
: 19 mm
W562-03-03-001
W562.02-05-005
W507-03-03-003 \
7. Loosen the clamps of suction hose (1) and return
hose (2) at the bottom of the hydraulic oil tank to
disconnect the hoses.
.....41111113
W562-02-05-004
UNDERCARRIAGE / Center Joint
W03-03-14